Indication of faults
Manual disabling
of the detector
It is possible to disable
the detector for a 15 min.
period:
• Prior to activities likely to
produce smoke (sweeping
of a dusty room, of a
chimney…) and cause
unwanted alarm release,
• o stop alarm in the event
of detection of
non-dangerous smoke.
In order to disable the
detector, press the test key
until the 1st beep sounds
or until the detector stop its
built-in audible alarm.
The indicator signalling the
state of the detector fl ickers
every 2 sec.
After the 15 min. disable
period has passed or
after a manual test, the
detector is set back
automatically into normal
operation with the
detector state indicator
fl ickering every 10 s.
For the 15 min. disable
period, the detector will
not detect any smoke, nor
release any audible alarm.
Thanks to a twilight cell, the sound indication
of power and detection head clogging faults is
inhibited during the night and delayed for a
maximum 12-hour period.
Power supply fault
If the sound indication of the clogged detection
head state is activated at an inappropriate time, it is
possible to postpone its occurrence for an 8-hour
delay over a maximum 7-day period by pressing
the test key until the 1st beep is emitted.
This is the time period available for cleaning the
detector.
Detector at the source of the fault indication
TG 500A/TG 500B
the unit fl ickers 8 times
over an 8-sec period
the unit fl ickers 8 times over an 8-sec period
TG 501A
-
Detector at the source of the fault indication
TG 500A/TG 500B
the unit fl ickers once
every 5 sec.
the unit releases 2 fast beeps every 60 sec.
TG 501A
-
Indication of detection head clogging
